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- Path: sparky!uunet!pipex!unipalm!uknet!cam-eng!cmh
- From: cmh@eng.cam.ac.uk (C.M. Hicks)
- Newsgroups: sci.electronics
- Subject: Re: Digital Filtering
- Keywords: Digital Filter software
- Message-ID: <1993Jan25.095709.17204@eng.cam.ac.uk>
- Date: 25 Jan 93 09:57:09 GMT
- References: <fitzpa.727655646@maxwell>
- Sender: cmh@eng.cam.ac.uk (C.M. Hicks)
- Organization: cam.eng
- Lines: 34
- Nntp-Posting-Host: club.eng.cam.ac.uk
-
- fitzpa@eeel.nist.gov (Gerry FitzPatrick) writes:
-
- >I need to design a digital filter (either a notch filter or
- >a low-pass filter). I will be analyzing data taken from a
- >lecroy 7200 scope (in either ascii or binary). I would like
- >I would like to look at the 60 Hz component of the waveform.
-
- >Any ideas on how to write a subroutine that would perform this
- >digital filtering on stored data? Any good books on designing
- >digital filters?
-
- 'MatLab' from Mathsworks would be absolutely ideal, although rather expensive.
- It is a data manipulation, analysis, and computational package, which has
- built-in routines for digital filtering, spectral analysis and graphical
- output (amongst many hundreds of other things). Runs on a 386 or better
- (and many other platforms such as NeXT, UN*X), but I think it requires a
- co-processor. It will, undoubtedly, do everything you need, but maybe costs
- too much...
-
- If you want to write your own routines, then the problem has two parts:
- i) designing the filter
- ii) processing the data
-
- Numerical Recipies in C/Pascal/Fortran by Press, Flannery and others probably
- contains most of what you need - but look before buying it, as this is from
- memory :-)
-
- Christopher Hicks
-
- --
- ==============================================================================
- Christopher Hicks | If it doesn't fit...
- cmh@uk.ac.cam.eng | ...you need a bigger hammer.
- ==============================================================================
-